Lock



March 1931. s. SEGAL 1,796,221

LOCK

Filed Aug. 4, 1925 2 Sheets-Sheet l FIG=5 INVENTOR ATTORNEY March 10, 1931. 5 SEGA'L 1,796,221

LOCK

Filed Aug. 4, 1925 2 Sheets-Sheet 2 INVENTOR YWW ATTORNEY Patented Mar. 10, 1931 UNITED STATES PATENT OFFICE .samURL SEGAL, or NEW YORK, N. Y., ASSIGNOR TO SEGAL LOCK & HARDWARE COM- PM, me, OF NEW YORK, N. Y., A CORPORATION or NEW YORK LOCK ' Application filed August 4, 1925. Serial NO. 48,019.

This invention relates toan improved type f lo k.

'It is an object of the'invention to provide a lock inwhich the parts are so constructed and arranged that if a forcible opening thereof "is attempted, the parts, although resisting such Opening, will not be liable to become distorted so as to subsequently not function. s s 7 1o Astill further'object is that of furnishing a device ofthis characterthe parts of which may be easily and cheaply manufactured and assembled and inwhich the finished lock may be readily operated in arpositive manner 1'5 and with freedom from mechanical difliculties.

, Specifically, it is another object to present a lock of the rotatable bolt type, which look will be acceptable from a commercial'standpoint- The invention accordingly comprises the features of construction, combination of elements and arrangement of parts which will be exemplifiedin the construction hereinafter set forth," and the scope of the application of which will be indicated in the claims.

For afuller understanding of the nature andobjects of the invention reference should be had to the following detailed description so taken in connection "with the accompanying drawings, in which:

"Fig.1is a side elevation of one form of lock embodying one form of the present invention and showing the parts in retracted position; I

L Fig. 2' is a similar view with the parts P oj ct d; p I is an end view of the lock as shown in Fig. 1;

.Fig. 4 is a transverse sectional view taken along the 1ines4'4,and in the direction of the arrows in Fig; 1;

Fig. 5 is a view similar to Fig. 1 but showing "a slightly different form of lock structure;q g s Fig. 6 is a fragmentary partly sectional plan viewtaken alongthe lines 6 -6 and in the direction of; the arrows in Fig. 5;

Fig. 7 is a fragmentary end view of the so look shown in the two preceding figures;

' Fig. 8 is a view correspondin to Figs. 1 and 5 and showing still another orm of lock constructed within the terms of the present invention;

Fig. 9 is a transverse sectional view taken along the lines 99 and in the direction of the arrows in Fig. 8;

Fig. 10 is a side elevation of a still further form of lock and showing the parts therein in retracted position;

Fig. 11 is a similar view but showing the parts projected;

Fig. 12 is a partly sectional plan View 'of the mechanism as shown in Fig. 10; and

Fig. 13 is a transverse sectional view taken along the lines 13l3 and in the direction of the arrows indicated in Fig. 10.

In these, several views the numeral 15 indicates the lock case, which may be in the form of a receptacle having an open side face normally closed by a conventional coverplate. The forward edge of the case is in each instance formed with a slot 16 for the passage of the bolt or bolts, and these latter, in the resent exemplification, include a pair of sha s 17 having their outer ends headed as at 18, it being noted that these heads are oblong and preferably of such shape that in one position they may be retracted to a point within the slot 16 so that their outer faces lie in substantially the same plane as the outer edge of the case.

These bolts are operatively supported in each form of lock by a bolt carrier which has a forked rear end 19, the arms of this fork straddling a shaft 20 rotatably mounted by the case. A crank 21 is attached to the shaft and pivotally carries at its outer end one end of a curved link 22, the opposite end of which is pivotally attached as at 23 to the bolt carrier, it being understood that these latter parts lie in a plane beyond the forked end 19.

Thus it will be understood that in each instance, upon the shaft 20 being turned the carrier will be projected and retracted, together with thebolts supported thereby, and at this time it will be noted that the forked ends 19 of these carriers are each preferably provided with a ledge 24, which, when the parts are in the positions shown in Figs.

are formed with reduced portions 26 providing grooves into which a locking plate 27 may fit in order to prevent'any movement other than rotative on, the part of the. bolts with respect to: the, carriers;

With specific reference to the type of lock shown in Figs. 1 to 4, it will. be noted that the bolts 17 are. each-provided with a -longitudinally extending groove having a straight leading portion 28'and aspirallyf Icurvedrear portion; EXtending. into these grooves are lugs 30,,w-hich, in this in-,

stance, "form integral parts of the case '15. As a consequence, it will be appreciated that When the shaft 'is turned by neansof a key" or knob; the, crank 21 will correspondingly move toproject or retract the bolt carrier. If the. former operation is. occurring-the bolts. will initially have 'a straight rectilinear movement, incident to. the straight portions 28 of the grooves. After these bolts have [been] projected for a certain distance, however, they will begin to turn, incident to the fact that the lugs 30 are now traversing the spiral portions 29 of the grooves, 2jTl1us, as iniFig. 2, the heads 19 of the bolts will have ample opportunity to enter the keeper 31 before they lbegin their turning movement, and upon full projection and after such entry they'will complete a 90 rotation, which will obviously result in the heads extending a plane at rightaf gles, to. the plane which "they-initially Occupied, and if the keeper is provided with an inwardly-extending ledge 32 adjacent its mouth, it will be vobtraction,

usrthat ncvre ract on of the bolts fr m within the keeper could result without turning the bodies of the-latter so that their heads will clear this ledge during such re:

' In the form of lock shown in Figs. 5 6

and 7, virtually the same form 1 of construction has been iresorted'to as, that shown in the preceding figures, with the exception the rightangl'e eX tension off the bolt 7 carrier is materially thickened, as at 33-, and

that theendsof the bolts are extended for a considerable distance beyond the rear edge of thisportion' of the carrier, and at these I points are provided with grooves 34- having straight lead-in I and spiral rear portions. Also, the forke portion 19 of the carrier'is t jhis'fform of look provided with slots 35 substantially in the line with the grooves 34:, and pins 36 are carried by the case 15 and have their bodies extending through these slots, their inner endsprojecting into and r1d1ng wlthln the grooves 36L.

As a consequence, upon the shaft20 being turned, and the-bolt carrier being projected,

thebolts' 17 will function in the same manher as that in which the bolts of the previously described lock function. "f However,

due to the thickness of-Tthe extension 33 it will emerge from the slot 16 and will enter the keeper so that thecarriersin addition to supporting and causing a functioning of thebolts, in itself will act as a dead-lock bolt, which, obviously, in certain instances is an extremely desirable factor. I

' Ifv desired, the. lock-.may, take the; form shown in Figs. Sand 9, in which-eats has been indicated at 3G- -th'e rightangle extensionof the carrier is'of still greater; width than the extension. described in. tl1e last for1n. This portion of the carrie'nin addition tofbe'ing bored for the accommodation of the bolts 17, is, formed WithSlQts37 communicating with .thesefbferesg The bolts in this forni of" lock correspond to the bolts shown in. Figs, 1 te hand the grooves of these elements are engage'd'bypi'ns @8 car.- riedby he verp at 3 ,.whichi pinse tend through 'the'straight' slots 37 and into the gro ve of thebQ s...

' Consequently, when the, carrier is projectd h bOlt W ll a fiQ idinlgly he, mOved to initially impart to them a" straight v rectil n ar m ement a d a, su sequent urni g movement n order o accomplish he. results desired. Also, the exte sion orffo'ot 36"of the carrier will act as deadib lt inorde to relieve the'bolts 17'fQf'jstrain the event'- that relative sidewiseniev'ement of the keeper and lock are' atte ilptd with' th bolt in P QIl C ed position; y is Wi 11 reference tothe form of lockishown n F gs 10 W 73i, itew lll beSnQtQdf hat'the carrier is formed with a rightangle. extension or foot 4 0 boredforl'the receptiQI-i'of bolts ll, whichill this instance are'not'pro- Vi ed' Wi h gfOQVQS- The ffil 19 flf carrier'pivotally supports, as at 42, one: end

of a lever .413, the-inner; end of which-lies adjacent the inner ends of the, boltshl. These bolts each carry pins, 44 v eccentrically disposed with" respect to their longitudinal axesand projecting from their inner. ends. The linki 45" is. connected was these pins andjsynchronizes the movement of the bolts, this link being formedfwith an opening-46 within which the ofif'set 47' pfthe .lever 43 projects.

This lever is formedwith alongitudinallyextendingslotfl8, which'hajs its rear end 4:9 extendin 'at an angle to the, major portion f t length. and apin. 50;,i3s carri d by-the s wee end thr ugh r d withi this slot. Thus, upon the carrier being projected the bolts 41, as well as the bolt formed by the foot will have a straight rectilinear movement, but just prior to the completion of the projection the pin 50 will cause the lever 43 to be rocked incident to the engagement of this pin with the angular rear portion 49 of the slot. This will in turn result in the link being moved to rotate the bolts 41 through a 90 angle so that the desired result is again achieved.

In all of the forms which this look may take the forked end of the carrier may support or be engaged by pins 51in order to properly confine the movement of the same, and it will be understood that where the ledge 24 is utilized and an attempt is made specifically afore referred to are achieved.-

It will be appreciated, however, that numerous changes in construction and rearrangement of the parts might be resorted to without departing from the spirit of the invention as defined by the claims.

,Having described my invention, what I claim as new and desire to secure by Letters 7 Patent is 1. A look, including, in combination, a case, a rotatable crank carried thereby, a bolt operatively connected with said crank .to be projected and retracted, a member connected with said bolt and movable with the same and presenting an edge lying adjacent to said crank, and a ledge portion associated with said member adjacent such edge and to be engaged by said crank when the bolt is in projected position to limit the further inovement of said crank.

and operatively connected with said crank and a ledge formed adjacent one of the inner edges of said forked portion and to be engaged by one of the side edges of said crank when the bolt is in projected position to limit the further movement of said crank.

3. A look, including, in combination, a rotatable bolt, a carrier therefor, means for effecting projection and retraction of said carrier, a pin eccentrically disposed with res ect to the axis of said bolt and mounted t ereon, means associated with said carrier and connected with said pin for shifting the bolt, and means for operating said lastnamed means.

4. A look, including, in combination, a casing, a bolt carrier, a rotatable bolt supported by said carrier, a head at the outer end of said bolt and beyond said carrier, means for shifting portions of said carrier and the bolt supported thereby beyond said casing, and means fixed with respect to the casing for rotating said bolt during such shifting.

5. A look, including, in combination, a casing, a bolt carrier movable longitudinally of said casing, a pair of rotatable bolts supported by the carrier one to each side of the center of the latter, heads secured to the outer ends of said bolts and beyond said carrier, means for shifting said carrier to have its outer end extended beyond said casing, and means fixed with respect to the casing for rotating said bolts during such shifting.

6. A look, including, in combination, a casing, a bolt within said casing and extendable beyond the same, a second bolt having a portion disposed in advance of said first named bolt and rotatable with respect thereto, and a means for projecting said first named bolt and effecting a rotation of said last named bolt relatively thereto.

In testimony whereof I aflix my signature.

SAMUEL SEGAL.

ill) 

